Handle region empty with default value
Handle region empty with default value

[#158658908]

cloudfoundry-incubator/bits-service,petergtz/bitsgo,cloudfoundry-incubator/bits-service,petergtz/bitsgo,cloudfoundry-incubator/bits-service,cloudfoundry-incubator/bits-service,cloudfoundry-incubator/bits-service